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Author kulikjak
Recipients kulikjak
Date 2020-12-16.10:05:22
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C function `subprocess_fork_exec` incorrectly transforms gids from the `extra_groups` argument because it passes `unsigned long*` rather than `pid_t*` into the `_Py_Gid_Converter()`. Assuming that `gid_t` is 32 bit and `unsigned long` is 64 bit (which it often is), `*(gid_t *)p = gid;` then incorrectly overwrites only part of that variable, leaving the other one filled with previous garbage.

I found this on Solaris, but I am pretty sure that this doesn't work correctly on Linux as well, since both use `unsigned int` as `gid_t`.
Date User Action Args
2020-12-16 10:05:22kulikjaksetrecipients: + kulikjak
2020-12-16 10:05:22kulikjaksetmessageid: <>
2020-12-16 10:05:22kulikjaklinkissue42655 messages
2020-12-16 10:05:22kulikjakcreate